ATE33278T1 - DEVICE FOR PROTECTING DRINKING WATER PIPES. - Google Patents

DEVICE FOR PROTECTING DRINKING WATER PIPES.

Info

Publication number
ATE33278T1
ATE33278T1 AT85109012T AT85109012T ATE33278T1 AT E33278 T1 ATE33278 T1 AT E33278T1 AT 85109012 T AT85109012 T AT 85109012T AT 85109012 T AT85109012 T AT 85109012T AT E33278 T1 ATE33278 T1 AT E33278T1
Authority
AT
Austria
Prior art keywords
valve
water
duct
servo
pressure
Prior art date
Application number
AT85109012T
Other languages
German (de)
Inventor
Walter Evers
Original Assignee
Lang Apparatebau Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lang Apparatebau Gmbh filed Critical Lang Apparatebau Gmbh
Application granted granted Critical
Publication of ATE33278T1 publication Critical patent/ATE33278T1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/104—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using a single check valve
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/108—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves having an aerating valve

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Safety Valves (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Devices For Dispensing Beverages (AREA)

Abstract

1. Device for the protection of drinking-water ducts (1) leading to positions of use against back-flowing used water, with a tubular separator (3) located in the drinking-water duct behind a supply valve (2) and including an axially-movable piston separator tube (26) in a cylinder provided with a supply line, which, with the supply valve (2) open, moves against spring action into a discharge connection (7) provided with a non-return valve (8) and is then traversed by water and, in contrast, with the supply valve (2) closed, moves into its separating position remote from the discharge connection (7), as well as with a pressure-control cylinder (2') containing the pressure-control piston (22) controlling the supply valve (2) having operating chambers disposed on both sides of the pressure-control piston (22) which are to be connected via a servo-control valve (4) provided with a servo-control piston (35) with a water supply and a discharge duct, wherein the servo-control piston (35) is operable by the water pressure on the one hand in the water duct and on the other hand in the used water duct, characterised in that the servo-control valve (4) is provided on the used water duct with a holding valve (6), which is located in a by-pass duct (9) parallel to the discharge connection (7) of the separator (3) and bridging over the non-return valve (8) and contains a valve piston (48) arranged to move under the flow water pressure prevailling there, which in its shifted position bridges the connection (10) between the servo-control valve (4) and the used water duct (5).
AT85109012T 1984-11-23 1985-07-19 DEVICE FOR PROTECTING DRINKING WATER PIPES. ATE33278T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843442748 DE3442748A1 (en) 1984-11-23 1984-11-23 DEVICE FOR PROTECTING DRINKING WATER PIPES
EP85109012A EP0182004B1 (en) 1984-11-23 1985-07-19 Protecting device for drinking-water conduit pipes

Publications (1)

Publication Number Publication Date
ATE33278T1 true ATE33278T1 (en) 1988-04-15

Family

ID=6250983

Family Applications (1)

Application Number Title Priority Date Filing Date
AT85109012T ATE33278T1 (en) 1984-11-23 1985-07-19 DEVICE FOR PROTECTING DRINKING WATER PIPES.

Country Status (3)

Country Link
EP (1) EP0182004B1 (en)
AT (1) ATE33278T1 (en)
DE (2) DE3442748A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520250A1 (en) * 1985-06-05 1986-12-11 Grünbeck Wasseraufbereitung GmbH, 8884 Höchstädt TUBE DISCONNECTOR
DE3626825A1 (en) * 1986-08-08 1988-02-18 Gruenbeck Josef Wasseraufb PIPE SEPARATION WITH A LOCKING DEVICE AND A MONITORING DEVICE FOR THE LOCKING DEVICE
DE3703715A1 (en) * 1987-02-06 1988-08-18 Schubert & Salzer Maschinen CONTROL VALVE FOR A TUBE DISCONNECTOR CONTROLLABLE FROM A DRIVE CHAMBER
EP0305557B1 (en) * 1987-08-31 1990-05-02 Honeywell-Braukmann GmbH Anti-backflow valve for drinking water

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3276465A (en) * 1963-01-18 1966-10-04 Donald G Griswold Backflow prevention device and relief valve control
DE2806310C2 (en) * 1978-02-15 1986-08-21 Lang Apparatebau GmbH, 8227 Siegsdorf Device for protecting drinking water pipes against backflowing process water
DE2849825C2 (en) * 1978-11-17 1984-05-10 Lang Apparatebau GmbH, 8227 Siegsdorf Drinking water flow fitting with a flow monitor built into a drinking water supply line

Also Published As

Publication number Publication date
DE3442748A1 (en) 1986-05-28
EP0182004B1 (en) 1988-03-30
DE3562030D1 (en) 1988-05-05
EP0182004A3 (en) 1986-12-17
EP0182004A2 (en) 1986-05-28

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Legal Events

Date Code Title Description
EEIH Change in the person of patent owner
REN Ceased due to non-payment of the annual fee